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4 Sheets-Sheet 1.

(No Model) J. B. UNDERW-OOD. CHROMATIC PRINTING MAGHINE. I No. 333,490.Patented Dec. 29,- 18 815.

ATTORNEYS.

(NoMod'eL) V I 4 Shets-Sheet 2. J. B. UNDERWOOD.

UHROMATIO PRINTING MACHINE. No. 333,490. Patented Dec. 29, 1885.

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6 INVENTOR ATTORNEYS.

N. PETERi Phnlwlilhngrmphnr, Wuhirlglon. D.C.

4 SheetsShet 3.

(No Model.)

J. B. UNDE RWOOD.

CHROMATIC PRINTING MACHINE;

Paten t d Dec. 29, 1885.

INVENTOR flfm wwd,

WITNESSES BYwmi ATTORNEYS.

UNITED STATES PATENT OFFIC JOSEPH B. UNDERWOOD, OF FAYETTEVILLE, NORTHCAROLINA, ASSIGNOR TO WM. A. GUTHRIE, OF SAME PLACE.

CHROMATlC-PRlNTlNG MACHINE.

SPECIFICATION forming part of Letters teem no. 333,490, dated December29, 188 5.

Application filed September 26, 1884. Serial No. 144,046. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH B. UNDERWOOD, a citizen of the United States.residing at Fayetteville, in the county of Cumberland and State of NorthCarolina, have invented certain new and useful Improvements inChromatic- Printing Machines, of which the following is a description. I

Figure 1 is a side elevation of a press provided with my improvement.tail view of my inking-roller. Fig. 3 is a sectional view of sleeve andend flanges upon which the rollers are formed. Fig. 4. is a plan view ofthe press-bed and the inking-rollers. Fig. 5 is a perspective view ofone of the side tracks. Fig. 6 is a plan view of the press-bed and sidetracks, and Fig. 7 is a vertical longitudinal sectionoftheimproved pressthrough line a: a: of Fig. 4.

The object of my invention is to provide a color-printing press which atthe same impression will print different portions of the sheet indiiferent-colored inks and permit the position of such coloredimpressions to be changed on the sheet as desired, the idea beingto'give special prominence to certain portions of the matter of anewspaper or circular for advertising purposes, 'or to make a moreornamental and attractive impression.

Color-printing presses have heretofore been constructed in whichinkingrolls supplied with different colors of ink were brought intocontact with different parts of the form by means of end wheels on saidrolls running on side tracks, which had elevated and depressed portionswhich could be arranged to allow the roll to drop to contact with thetype, or be raised therefrom at points where it was not wanted to givethat color, and I do not claim this general arrangement of parts; but myimprovements upon the same consist in such detailed construction andarrangement of parts as are designed to meet the practical requirementsof this style of printing, which I will now proceed to describe.

My invention is shown applied to what is known as the Campbell press, inwhich a revolving cylinder. A, Fig. 1, is provided upon its breast withmetal strips or hands a, Fig. 4, between which and the cylinder thepaper is fed from an inclined table, B, above. (See Fig. 1.) As thecylinder A revolves, a crank, O, on its shaft imparts, through pitman D,a

Fig. 2 is a de-.

reciprocating motion to the type-bed F, Fig. 7, which slides inhorizontal guides in the upper edge of the frame-work E. As the cylinderA revolves with the sheet of paper, the type-bed passes under saidcylinder in tangential contact therewith, and prints the impression onthe paper. As the type-bed passes back, the type are inked by a roller,G, which receives its supply from the ink-fountain H, through atransfer-table. I, which slides under the large ink-roller of thefountain and receives therefrom a supply of ink, and then transfers itto the roller G.

In describing my coloring apparatus I would state that in thepresent-instance I have arranged it for inking two blue spaces in thesecond column and two red spaces in the fourth column, as shown in Fig.6, all the rest of the form being inked with black ink. The type of thecolored spaces is set up with the other type'in the form in the usualway, and my invention relates simply to the means for inking the typewith different colors of ink. Whenever there is a complete column ofblack, as the first and third in .Fig. 6, these are inked in the usualway by rollers J J, Fig. 4., which receive black ink from thetransfer-table I as it passes under them; but for the second and fourthcolumns these each have two inking devicesthe second column a blue-andblack one, and the fourth column a red and blackone-and in inking theseool- 8 umns as the type-bed passes under the cy1in-' inder the blackroller drops down and inks the black type at the head of the column.Then the black roller is lifted up and the color-roller drops down andinks the colored 0 space. Then as the type-bed passes farther' the colorroller rises again and the black one is again dropped to contact, and ifthere are two color impressions in the same column, as shown in Fig. 6,this alternate, action of the 5 rollers is again repeated. To regulatethis action, the color-rollers K and L, Fig. 4, are j arranged upon ashaft, M, which is hung in the rocking arms M ofa shaft,.M, and whichshaft M is provided with wheels M, that run I00 upon the middle one, N,of the three tracks N N N at the edges of the frame, which areduplicated on opposite sides of the machine and are connected to andmove with the typebed. K L are the black-ink rollers of these [05two-color columns, which are also mounted upon a shaft, 0, hung in therocking arms of a shaft, 0". This shaft Ois provided with wheels Oflthatrun upon the inner one, N, of the three tracks. These two tracks N and Nare constructed with elevated and depressed portions, so as to raise therollers M O*,or allow them to drop down,according' as it is desired tohave the color-rollers K L in contact with the bed,or the black-rollersK L,which alternate with the color-rollers in the colorcolumns. Thesetracks are formed of plain beds with screwholes ain them and sectionalblocks b that are about one-eighth of an inch in thickness, or justenough to raise the inkrollers from the type. \Vhere the raised portionsI), exist in one track, N, the absence of said blocks in the othertrack, N, forms a depression, and when the ink-roller wheels M or O areon the depressed portions the inkrollers are in contact with thetype'bed, and

. when said wheels are on the raised sections b the ink-rollers are outof contact with the type-bed, and these sections b may be transposed bytheir screws from one track to the other, according to the timing of theaction of the wheels and the location of the colorspaces.

Now, I am aware that the general principle of this action is not new, asshown by the English Patent No. 408 of 1855, and that similar trackshave been made of sectional blocks screwed to place. My invention isdistinctive in this connection, in that the track-sections b are all ofthe same length, and the track-bed has its screw-holes a of each trackthe same distance apart and adapted to the screw-holes of thetrack-sections, so that the sections being made of a length to representnewspapersquares, any amount of color-space may be arranged for by beingbuilt up of these tracksections by simply transferring the track-sectionb from one track to the other, the screws and screw-holes serving toconnect them to the bed, and the said transfer serving to effect notonly the building up of the elevated track on one track, but serves atonce to create the corresponding depression in the other track. Withthis arrangement it will be seen that when the typebed runs under thewheels M O the color-rollers K and L act alternately with theblack-rollers K L of the same colnnin, the color-rollers dropping downon the spaces to be colored, and. the black -rollers dropping down onthe spaces to be black. and giving their respective colors of ink totheir respective spaces.

To change the position of the color-spaces in the same column, theshafts M and O, with their rollers, are adjusted close to or fartherfrom the cylinder A, and the blocks b are shifted from one track, N, tothe other, N, as is required to gve the proper timing to the alternateaction of the rollers.

To change the color-spaces from one column to another, the rollers K Kand L L are adjusted along the shafts O and M longitudinally,

and to permit this the rollers are formed around a sleeve, 0, Fig. 3,having end flanges, d, and are then rigidly fastened to the shaft bysetscrews or keys, as shown in Fig. 2. The value of this adjustment ofthe sectional ink-rolls longitudinally on their shaft and transverselyto the press may be seen, when it is understood that in wedging up theform in the chase the columns might be slightly displaced to one side orthe other of the sectional rolls, which difiiculty is easily remedied bysimply loosening the set-screw and readj usting the sectional roll tocorrect registration with the column to be inked with that color.

For inking the color-rollers K and L special ink-fountains H are used.(See Figs. 1, 4, and 7.) These fountains are fastened by a set-screw toa bar, I, crossing the frame transversely, in which bar is a slot, e, topermit the ink-fountains to be changed from column to column. This bar Pis also designed to be adjustable to or from the cylinder by flanges fand set-screws, Fig. 1, to correspond with the adjustment of theink-rollers.

In constructing the color-rollers K and L they are madea little shorterthan the width of the column, and the black-rollers J J a lit tle wider,so that the lead lines shall be inked black, and there is no blending ofthe colors with the black. I may also arrange on the arms of the rollerssoft felt or leather scrapers Q.

(see Fig. 4,) which by scraping or wiping the ends of the rollersprevent the accumulation of ink at the edges, and give a clean sharpedge that prevents blurring. This I propose to place on alltheink-rollers, if desired. I The outer track, N is a plain one, and isdesigned to receive the wheels J of the rollers J, to give them apositive motion of their own independent of the frictional contact withthe type-bed, so that the type will not be blurred when first struck bythe said inking-roll.

Having thus described my invention, what I claim as new is 1. In aeolor-printing press, the combination, with the type-bed and thecolor-inking rollers, one being arranged to traverse the other, of a setof wheels on the ends of the rollers, and a corresponding set of tracksin line with the wheels, and constructed of a bed with screw-holes aandequal tracksections b, having screw-holes adapted in spacing to thescrew-holes of the bed, and arranged, as described, to be transferredfrom one track to the other, as and for the purpose set forth.

2. The combination, with the press having frame E and cylinder A, of thesliding typebed F, having on a level with its type an inktransferringtable, I, color-fountains arranged upon the frame E, and the finalinking-rolls, of which the roll of one color derives its ink direct fromits fountain, and the other of which final inking-rolls derives its inkfrom the other fountain through the transfer-table I, substantially asshown and described.

Witnesses: JOSEPH B. UNDERWOOD.

WM. HUssLn, Gus. B. SHEPHERD.

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